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Finding the Fourth Proportional to 12,106.68, 16,705.08 and 7,392.48

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Solution

The fourth proportional to 12,106.68, 16,705.08 and 7,392.48 is: 10,200.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.68 : 16,705.08 = 7,392.48 : x
  2. Step 2: Convert to fraction form
    12,106.68/16,705.08 = 7,392.48/x
  3. Step 3: Cross multiply
    12,106.68x = 16,705.08 × 7,392.48
  4. Step 4: Simplify right side
    12,106.68x = 123,491,969.80
  5. Step 5: Solve for x
    x = 123,491,969.80/12,106.68
  6. Step 6: Final answer
    x = 10,200.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.